329  
FZUS51 KBOX 160205  
CWFBOX  
 
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
1005 PM EDT SUN MAR 15 2026  
 
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT  
TO 25 NM  
 
ANZ200-161500-  
1005 PM EDT SUN MAR 15 2026  
   
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS  
 
A WARM FRONT WILL LIFT N ACROSS THE WATERS TONIGHT FOLLOWED BY  
STRONG LOW PRES LIFTING INTO QUEBEC ON MON. STORM FORCE S WIND GUSTS  
DEVELOP LATE MON INTO MON NIGHT FOLLOWED BY NEAR GALE FORCE W WIND  
GUSTS TUE BEHIND A STRONG COLD FRONT. HIGH PRES BUILDS OVER THE  
WATERS WED INTO THU, MOVING OFFSHORE FRI.  
 
 
 
ANZ250-161500-  
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK  
NATIONAL MARINE SANCTUARY-  
1005 PM EDT SUN MAR 15 2026  
 
...STORM WARNING IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY  
MORNING...  
   
OVERNIGHT  
SE WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT WITH  
GUSTS UP TO 30 KT. SEAS 2 TO 3 FT, BUILDING TO 3 TO 5 FT. WAVE  
DETAIL: SE 3 FT AT 3 SECONDS AND NW 1 FOOT AT 3 SECONDS, BECOMING  
SE 5 FT AT 5 SECONDS AND E 1 FOOT AT 10 SECONDS. A CHANCE OF  
SHOWERS.    
MON  
SE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 5 TO  
8 FT, BUILDING TO 7 TO 10 FT IN THE AFTERNOON. WAVE DETAIL: S  
8 FT AT 6 SECONDS AND SE 8 FT AT 10 SECONDS, BECOMING S 9 FT AT  
7 SECONDS. PATCHY FOG IN THE MORNING. AREAS OF DENSE FOG IN THE  
AFTERNOON. SHOWERS. VSBY 1 NM OR LESS.    
MON NIGHT  
S WINDS 25 TO 35 KT, BECOMING 30 TO 35 KT AFTER  
MIDNIGHT. GUSTS UP TO 50 KT. SEAS 8 TO 11 FT, BUILDING TO 9 TO  
13 FT AFTER MIDNIGHT. WAVE DETAIL: S 11 FT AT 7 SECONDS, BECOMING  
SE 12 FT AT 9 SECONDS AND S 6 FT AT 7 SECONDS. AREAS OF DENSE  
FOG. SHOWERS. VSBY 1 NM OR LESS.    
TUE  
SW WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT, BECOMING W  
AROUND 20 KT WITH GUSTS UP TO 30 KT IN THE AFTERNOON. SEAS 8 TO  
11 FT. WAVE DETAIL: SE 11 FT AT 10 SECONDS AND S 6 FT AT  
6 SECONDS. PATCHY FOG IN THE MORNING. SHOWERS IN THE MORNING WITH  
VSBY 1 TO 3 NM.   
TUE NIGHT  
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS  
6 TO 9 FT. WAVE DETAIL: SE 7 FT AT 11 SECONDS AND W 6 FT AT  
5 SECONDS.    
WED  
W WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT, DIMINISHING TO  
5 TO 10 KT WITH GUSTS UP TO 20 KT IN THE AFTERNOON. SEAS 5 TO  
7 FT. WAVE DETAIL: W 6 FT AT 5 SECONDS AND SE 5 FT AT 11 SECONDS.  
A CHANCE OF LIGHT FREEZING SPRAY IN THE MORNING.    
WED NIGHT  
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE  
EVENING. SEAS 3 TO 5 FT.    
THU THROUGH FRI  
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.  
SEAS 3 TO 4 FT.    
FRI NIGHT  
SW WINDS 20 TO 25 KT. SEAS 3 TO 4 FT. A CHANCE OF  
RAIN.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 
 
 
ANZ251-161500-  
MASSACHUSETTS BAY AND IPSWICH BAY-  
1005 PM EDT SUN MAR 15 2026  
 
...STORM WARNING IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY  
MORNING...  
   
OVERNIGHT  
SE WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT.  
SEAS 2 TO 4 FT. WAVE DETAIL: SE 4 FT AT 5 SECONDS AND E 1 FOOT AT  
10 SECONDS. A CHANCE OF SHOWERS.    
MON  
SE WINDS 25 TO 30 KT, BECOMING S 20 TO 25 KT IN THE  
AFTERNOON. SEAS 5 TO 7 FT. WAVE DETAIL: S 7 FT AT 6 SECONDS AND  
SE 6 FT AT 10 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 NM OR LESS.    
MON NIGHT  
S WINDS 25 TO 35 KT. GUSTS UP TO 45 KT, INCREASING  
TO 55 KT AFTER MIDNIGHT. SEAS 5 TO 7 FT, BUILDING TO 6 TO 9 FT  
AFTER MIDNIGHT. WAVE DETAIL: SE 7 FT AT 7 SECONDS, BECOMING S  
9 FT AT 7 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 NM OR LESS.    
TUE  
SW WINDS 25 TO 30 KT, BECOMING W AROUND 20 KT IN THE  
AFTERNOON. SEAS 5 TO 7 FT. WAVE DETAIL: SE 7 FT AT 9 SECONDS AND  
S 4 FT AT 6 SECONDS. PATCHY FOG IN THE MORNING. SHOWERS IN THE  
MORNING.    
TUE NIGHT  
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS  
4 TO 6 FT. WAVE DETAIL: W 4 FT AT 4 SECONDS AND SE 4 FT AT  
12 SECONDS.    
WED  
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, DIMINISHING TO  
5 TO 10 KT IN THE AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: NW 4 FT  
AT 5 SECONDS AND E 3 FT AT 11 SECONDS.    
WED NIGHT  
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.    
THU THROUGH FRI  
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.  
SEAS 2 TO 3 FT.    
FRI NIGHT  
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS  
2 TO 3 FT. A CHANCE OF RAIN.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 
 
 
ANZ231-161500-  
CAPE COD BAY-  
1005 PM EDT SUN MAR 15 2026  
 
...STORM WARNING IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY  
MORNING...  
   
OVERNIGHT  
SE WINDS 10 TO 15 KT, INCREASING TO 20 TO 25 KT.  
SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 4 SECONDS AND N 1 FOOT AT  
4 SECONDS. A CHANCE OF SHOWERS.    
MON  
S WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 3 TO  
5 FT. WAVE DETAIL: SE 5 FT AT 8 SECONDS AND S 4 FT AT 5 SECONDS.  
PATCHY FOG IN THE MORNING. AREAS OF DENSE FOG IN THE AFTERNOON.  
SHOWERS. VSBY 1 NM OR LESS.    
MON NIGHT  
S WINDS 25 TO 35 KT WITH GUSTS UP TO 50 KT. SEAS  
5 TO 7 FT. WAVE DETAIL: SE 6 FT AT 9 SECONDS AND S 5 FT AT  
5 SECONDS. AREAS OF DENSE FOG IN THE EVENING. PATCHY FOG AFTER  
MIDNIGHT. SHOWERS. VSBY 1 NM OR LESS.    
TUE  
SW WINDS 25 TO 30 KT, DIMINISHING TO AROUND 20 KT IN THE  
AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: SE 5 FT AT 10 SECONDS AND  
S 4 FT AT 5 SECONDS. PATCHY FOG IN THE MORNING. SHOWERS IN THE  
MORNING.    
TUE NIGHT  
W WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS  
3 TO 5 FT. WAVE DETAIL: SE 4 FT AT 11 SECONDS AND W 3 FT AT  
4 SECONDS.    
WED  
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, DIMINISHING TO  
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT  
AT 5 SECONDS AND SE 3 FT AT 11 SECONDS.    
WED NIGHT  
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT.   
THU THROUGH FRI NIGHT  
SW WINDS 15 TO 20 KT. SEAS 2 TO 3 FT.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 
 
 
ANZ254-161500-  
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA  
OUT 20 NM-  
1005 PM EDT SUN MAR 15 2026  
 
...STORM WARNING IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY  
MORNING...  
   
OVERNIGHT  
SE WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT,  
INCREASING TO 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 2 TO 3 FT,  
BUILDING TO 3 TO 5 FT. WAVE DETAIL: SE 3 FT AT 4 SECONDS AND NW  
2 FT AT 6 SECONDS, BECOMING SE 5 FT AT 5 SECONDS AND NW 1 FOOT AT  
5 SECONDS.    
MON  
SE WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS 5 TO  
8 FT, BUILDING TO 8 TO 11 FT IN THE AFTERNOON. WAVE DETAIL: SE  
8 FT AT 7 SECONDS AND SE 7 FT AT 10 SECONDS, BECOMING SE 10 FT AT  
7 SECONDS AND S 1 FOOT AT 4 SECONDS. AREAS OF DENSE FOG. SHOWERS.  
VSBY 1 NM OR LESS.    
MON NIGHT  
S WINDS 25 TO 35 KT, BECOMING 30 TO 35 KT AFTER  
MIDNIGHT. GUSTS UP TO 50 KT. SEAS 9 TO 13 FT, BUILDING TO 11 TO  
15 FT AFTER MIDNIGHT. WAVE DETAIL: S 13 FT AT 9 SECONDS AND S  
2 FT AT 5 SECONDS, BECOMING S 15 FT AT 10 SECONDS AND S 2 FT AT  
5 SECONDS. AREAS OF DENSE FOG. SHOWERS. VSBY 1 NM OR LESS.    
TUE  
SW WINDS 25 TO 30 KT. GUSTS UP TO 40 KT IN THE MORNING.  
SEAS 10 TO 14 FT, SUBSIDING TO 8 TO 11 FT IN THE AFTERNOON. WAVE  
DETAIL: S 14 FT AT 10 SECONDS AND S 3 FT AT 5 SECONDS, BECOMING S  
11 FT AT 11 SECONDS AND W 4 FT AT 5 SECONDS. PATCHY FOG IN THE  
MORNING. SHOWERS IN THE MORNING WITH VSBY 1 TO 3 NM.    
TUE NIGHT  
W WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT  
AFTER MIDNIGHT. SEAS 8 TO 11 FT. WAVE DETAIL: S 10 FT AT  
11 SECONDS AND W 5 FT AT 5 SECONDS.    
WED  
NW WINDS 15 TO 20 KT, BECOMING W 5 TO 10 KT IN THE  
AFTERNOON. GUSTS UP TO 25 KT. SEAS 5 TO 8 FT, SUBSIDING TO 4 TO  
6 FT IN THE AFTERNOON. WAVE DETAIL: SE 6 FT AT 11 SECONDS AND NW  
5 FT AT 6 SECONDS, BECOMING SE 6 FT AT 10 SECONDS AND N 4 FT AT  
5 SECONDS.    
WED NIGHT  
S WINDS 5 TO 10 KT. SEAS 3 TO 5 FT.    
THU THROUGH FRI NIGHT  
SW WINDS 15 TO 20 KT. SEAS 3 TO 5 FT.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 
 
 
ANZ255-161500-  
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD  
AND NANTUCKET-  
1005 PM EDT SUN MAR 15 2026  
 
...STORM WARNING IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY  
MORNING...  
   
OVERNIGHT  
SE WINDS 15 TO 20 KT, INCREASING TO 25 TO 30 KT.  
SEAS 2 TO 3 FT, BUILDING TO 4 TO 6 FT. WAVE DETAIL: S 3 FT AT  
5 SECONDS AND SE 1 FOOT AT 10 SECONDS, BECOMING S 6 FT AT  
6 SECONDS AND SE 1 FOOT AT 10 SECONDS. A CHANCE OF SHOWERS.    
MON  
S WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS 6 TO  
9 FT, BUILDING TO 9 TO 13 FT IN THE AFTERNOON. WAVE DETAIL: SE  
9 FT AT 10 SECONDS AND SE 8 FT AT 6 SECONDS, BECOMING S 12 FT AT  
9 SECONDS AND S 2 FT AT 5 SECONDS. PATCHY FOG IN THE MORNING.  
AREAS OF DENSE FOG IN THE AFTERNOON. SHOWERS IN THE MORNING. A  
CHANCE OF SHOWERS IN THE AFTERNOON. VSBY 1 NM OR LESS.    
MON NIGHT  
S WINDS 30 TO 40 KT WITH GUSTS UP TO 50 KT. SEAS  
11 TO 15 FT, BUILDING TO 13 TO 18 FT AFTER MIDNIGHT. WAVE DETAIL:  
S 15 FT AT 10 SECONDS AND S 2 FT AT 5 SECONDS, BECOMING S 18 FT  
AT 10 SECONDS AND S 2 FT AT 5 SECONDS. AREAS OF DENSE FOG.  
SHOWERS. VSBY 1 NM OR LESS.    
TUE  
SW WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS 11 TO  
15 FT, SUBSIDING TO 9 TO 13 FT IN THE AFTERNOON. WAVE DETAIL: S  
15 FT AT 11 SECONDS AND SW 2 FT AT 6 SECONDS, BECOMING SW 12 FT  
AT 11 SECONDS AND W 7 FT AT 7 SECONDS. PATCHY FOG IN THE MORNING.  
SHOWERS IN THE MORNING WITH VSBY 1 TO 3 NM.    
TUE NIGHT  
W WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT  
AFTER MIDNIGHT. SEAS 9 TO 13 FT, SUBSIDING TO 8 TO 11 FT AFTER  
MIDNIGHT. WAVE DETAIL: S 11 FT AT 10 SECONDS AND W 8 FT AT  
8 SECONDS, BECOMING S 9 FT AT 10 SECONDS AND W 7 FT AT 7 SECONDS.   
WED  
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING W  
5 TO 10 KT IN THE AFTERNOON. SEAS 6 TO 9 FT, SUBSIDING TO 4 TO  
6 FT IN THE AFTERNOON. WAVE DETAIL: S 7 FT AT 10 SECONDS AND W  
5 FT AT 7 SECONDS, BECOMING S 6 FT AT 10 SECONDS AND W 3 FT AT  
6 SECONDS.    
WED NIGHT  
S WINDS 5 TO 10 KT. SEAS 3 TO 5 FT.    
THU THROUGH FRI NIGHT  
SW WINDS 15 TO 20 KT WITH GUSTS UP TO  
25 KT. SEAS 2 TO 4 FT.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 
 
 
ANZ256-161500-  
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT  
TO 20 NM SOUTH OF BLOCK ISLAND-  
1005 PM EDT SUN MAR 15 2026  
 
...STORM WARNING IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY  
MORNING...  
   
OVERNIGHT  
SE WINDS 15 TO 20 KT, INCREASING TO 25 TO 30 KT.  
SEAS 3 TO 4 FT, BUILDING TO 4 TO 6 FT. WAVE DETAIL: S 4 FT AT  
6 SECONDS AND SE 1 FOOT AT 10 SECONDS, BECOMING SE 6 FT AT  
6 SECONDS AND SE 1 FOOT AT 10 SECONDS. A CHANCE OF SHOWERS.    
MON  
S WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS 7 TO  
10 FT, BUILDING TO 10 TO 14 FT IN THE AFTERNOON. WAVE DETAIL: SE  
10 FT AT 8 SECONDS, BECOMING S 12 FT AT 9 SECONDS AND SE 1 FOOT  
AT 5 SECONDS. PATCHY FOG IN THE MORNING. AREAS OF DENSE FOG IN  
THE AFTERNOON. A CHANCE OF TSTMS. SHOWERS IN THE MORNING, THEN A  
CHANCE OF SHOWERS IN THE AFTERNOON. VSBY 1 NM OR LESS.    
MON NIGHT  
S WINDS 30 TO 40 KT WITH GUSTS UP TO 50 KT. SEAS  
12 TO 17 FT, BUILDING TO 15 TO 19 FT AFTER MIDNIGHT. WAVE DETAIL:  
S 16 FT AT 10 SECONDS AND SE 1 FOOT AT 5 SECONDS, BECOMING S  
18 FT AT 10 SECONDS AND S 1 FOOT AT 5 SECONDS. AREAS OF DENSE  
FOG. SHOWERS. VSBY 1 NM OR LESS.    
TUE  
W WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 12 TO  
16 FT, SUBSIDING TO 10 TO 13 FT IN THE AFTERNOON. WAVE DETAIL: S  
15 FT AT 11 SECONDS AND W 2 FT AT 6 SECONDS, BECOMING SW 12 FT AT  
10 SECONDS AND W 3 FT AT 6 SECONDS. PATCHY FOG IN THE MORNING.  
SHOWERS LIKELY IN THE MORNING.    
TUE NIGHT  
W WINDS 25 TO 30 KT, BECOMING NW 20 TO 25 KT AFTER  
MIDNIGHT. SEAS 9 TO 12 FT, SUBSIDING TO 7 TO 10 FT AFTER  
MIDNIGHT. WAVE DETAIL: S 11 FT AT 10 SECONDS AND W 5 FT AT  
6 SECONDS, BECOMING S 9 FT AT 10 SECONDS AND NW 6 FT AT  
6 SECONDS.    
WED  
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING W  
5 TO 10 KT IN THE AFTERNOON. SEAS 5 TO 8 FT, SUBSIDING TO 4 TO  
6 FT IN THE AFTERNOON. WAVE DETAIL: S 7 FT AT 10 SECONDS AND W  
4 FT AT 6 SECONDS, BECOMING SE 5 FT AT 10 SECONDS AND W 3 FT AT  
6 SECONDS.    
WED NIGHT  
S WINDS 5 TO 10 KT. SEAS 3 TO 5 FT.    
THU THROUGH FRI NIGHT  
SW WINDS 20 TO 25 KT. SEAS 3 TO 5 FT.  
 
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 
 
 
ANZ232-161500-  
NANTUCKET SOUND-  
1005 PM EDT SUN MAR 15 2026  
 
...STORM WARNING IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY  
MORNING...  
   
OVERNIGHT  
SE WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT,  
INCREASING TO 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS AROUND  
2 FT, BUILDING TO 3 TO 4 FT. WAVE DETAIL: SE 2 FT AT 3 SECONDS  
AND SW 1 FOOT AT 6 SECONDS, BECOMING S 4 FT AT 5 SECONDS AND SE  
1 FOOT AT 10 SECONDS. A CHANCE OF SHOWERS.    
MON  
S WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 5 TO  
7 FT. WAVE DETAIL: S 5 FT AT 5 SECONDS AND S 5 FT AT 9 SECONDS.  
PATCHY FOG IN THE MORNING. AREAS OF DENSE FOG IN THE AFTERNOON.  
SHOWERS IN THE MORNING. A CHANCE OF SHOWERS IN THE AFTERNOON.  
VSBY 1 NM OR LESS.    
MON NIGHT  
S WINDS 30 TO 40 KT WITH GUSTS UP TO 50 KT. SEAS  
6 TO 9 FT. WAVE DETAIL: S 5 FT AT 5 SECONDS AND S 5 FT AT  
9 SECONDS. AREAS OF DENSE FOG. SHOWERS. VSBY 1 NM OR LESS.    
TUE  
SW WINDS 25 TO 30 KT. GUSTS UP TO 40 KT IN THE MORNING.  
SEAS 5 TO 8 FT. WAVE DETAIL: S 5 FT AT 5 SECONDS AND S 4 FT AT  
10 SECONDS. PATCHY FOG IN THE MORNING. SHOWERS IN THE MORNING  
WITH VSBY 1 TO 3 NM.    
TUE NIGHT  
W WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT  
AFTER MIDNIGHT. SEAS 5 TO 7 FT. WAVE DETAIL: W 5 FT AT 5 SECONDS  
AND S 3 FT AT 11 SECONDS.    
WED  
NW WINDS 15 TO 20 KT, BECOMING W 5 TO 10 KT IN THE  
AFTERNOON. SEAS 3 TO 5 FT, SUBSIDING TO 2 TO 3 FT IN THE  
AFTERNOON. WAVE DETAIL: NW 3 FT AT 4 SECONDS AND SE 2 FT AT  
11 SECONDS, BECOMING NW 2 FT AT 5 SECONDS AND SE 2 FT AT  
10 SECONDS.    
WED NIGHT  
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.    
THU THROUGH FRI NIGHT  
SW WINDS 10 TO 15 KT WITH GUSTS UP TO  
20 KT. SEAS AROUND 2 FT.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 
 
 
ANZ233-161500-  
VINEYARD SOUND-  
1005 PM EDT SUN MAR 15 2026  
 
...STORM WARNING IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY  
MORNING...  
   
OVERNIGHT  
SE WINDS 15 TO 20 KT, INCREASING TO 25 TO 30 KT.  
SEAS 2 TO 3 FT, BUILDING TO 3 TO 5 FT. WAVE DETAIL: SE 2 FT AT  
3 SECONDS AND SW 1 FOOT AT 6 SECONDS, BECOMING S 3 FT AT  
5 SECONDS AND SE 1 FOOT AT 10 SECONDS. A CHANCE OF SHOWERS.    
MON  
S WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS 5 TO  
7 FT, BUILDING TO 6 TO 9 FT IN THE AFTERNOON. WAVE DETAIL: S 5 FT  
AT 10 SECONDS AND S 4 FT AT 5 SECONDS, BECOMING S 6 FT AT  
9 SECONDS AND S 3 FT AT 5 SECONDS. PATCHY FOG IN THE MORNING.  
AREAS OF DENSE FOG IN THE AFTERNOON. A CHANCE OF TSTMS. SHOWERS  
IN THE MORNING, THEN A CHANCE OF SHOWERS IN THE AFTERNOON. VSBY  
1 NM OR LESS.    
MON NIGHT  
S WINDS 30 TO 40 KT WITH GUSTS UP TO 50 KT. SEAS  
8 TO 11 FT, BUILDING TO 9 TO 13 FT AFTER MIDNIGHT. WAVE DETAIL: S  
8 FT AT 10 SECONDS AND S 4 FT AT 5 SECONDS, BECOMING S 10 FT AT  
11 SECONDS AND S 4 FT AT 5 SECONDS. AREAS OF DENSE FOG. SHOWERS.  
A CHANCE OF TSTMS IN THE EVENING. VSBY 1 NM OR LESS.    
TUE  
SW WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 7 TO  
10 FT. WAVE DETAIL: S 9 FT AT 11 SECONDS AND S 4 FT AT 6 SECONDS.  
PATCHY FOG IN THE MORNING. SHOWERS IN THE MORNING.    
TUE NIGHT  
W WINDS 25 TO 30 KT, BECOMING NW 20 TO 25 KT AFTER  
MIDNIGHT. SEAS 5 TO 7 FT. WAVE DETAIL: SW 7 FT AT 10 SECONDS AND  
W 4 FT AT 6 SECONDS.    
WED  
NW WINDS 15 TO 20 KT, BECOMING W 5 TO 10 KT IN THE  
AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: S 4 FT AT 10 SECONDS AND  
W 3 FT AT 6 SECONDS.    
WED NIGHT  
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.    
THU THROUGH FRI  
SW WINDS 10 TO 15 KT. SEAS AROUND 2 FT.    
FRI NIGHT  
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS  
2 TO 4 FT.  
 
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 
 
 
ANZ234-161500-  
BUZZARDS BAY-  
1005 PM EDT SUN MAR 15 2026  
 
...STORM WARNING IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY  
MORNING...  
   
OVERNIGHT  
SE WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT,  
INCREASING TO 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 2 TO 4 FT.  
WAVE DETAIL: S 3 FT AT 5 SECONDS AND SE 1 FOOT AT 10 SECONDS. A  
CHANCE OF SHOWERS.    
MON  
S WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS 4 TO  
6 FT. WAVE DETAIL: S 5 FT AT 10 SECONDS AND S 4 FT AT 5 SECONDS.  
PATCHY FOG IN THE MORNING. AREAS OF DENSE FOG IN THE AFTERNOON.  
SHOWERS WITH A CHANCE OF TSTMS. VSBY 1 NM OR LESS.    
MON NIGHT  
S WINDS 30 TO 40 KT WITH GUSTS UP TO 50 KT. SEAS  
5 TO 8 FT, BUILDING TO 7 TO 10 FT AFTER MIDNIGHT. WAVE DETAIL: S  
6 FT AT 10 SECONDS AND S 5 FT AT 5 SECONDS, BECOMING SW 8 FT AT  
11 SECONDS AND S 6 FT AT 5 SECONDS. AREAS OF DENSE FOG. SHOWERS.  
A CHANCE OF TSTMS IN THE EVENING. VSBY 1 NM OR LESS.    
TUE  
SW WINDS 25 TO 30 KT. GUSTS UP TO 40 KT IN THE MORNING.  
SEAS 5 TO 7 FT. WAVE DETAIL: SW 7 FT AT 10 SECONDS AND S 5 FT AT  
6 SECONDS. PATCHY FOG IN THE MORNING. SHOWERS IN THE MORNING.    
TUE NIGHT  
W WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT  
AFTER MIDNIGHT. GUSTS UP TO 30 KT. SEAS 4 TO 6 FT. WAVE DETAIL: W  
5 FT AT 6 SECONDS AND S 5 FT AT 10 SECONDS.    
WED  
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING W  
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: S 3 FT  
AT 10 SECONDS AND W 2 FT AT 6 SECONDS.    
WED NIGHT  
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT.   
THU THROUGH FRI NIGHT  
SW WINDS 15 TO 20 KT. SEAS 2 TO 3 FT.  
 
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 
 
 
ANZ235-161500-  
RHODE ISLAND SOUND-  
1005 PM EDT SUN MAR 15 2026  
 
...STORM WARNING IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY  
MORNING...  
   
OVERNIGHT  
SE WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT WITH  
GUSTS UP TO 30 KT. SEAS 2 TO 3 FT, BUILDING TO 4 TO 6 FT. WAVE  
DETAIL: S 3 FT AT 5 SECONDS AND SE 1 FOOT AT 10 SECONDS, BECOMING  
S 6 FT AT 6 SECONDS AND SE 1 FOOT AT 10 SECONDS. A CHANCE OF  
SHOWERS.    
MON  
S WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS 6 TO  
9 FT, BUILDING TO 8 TO 11 FT IN THE AFTERNOON. WAVE DETAIL: SE  
9 FT AT 8 SECONDS, BECOMING S 11 FT AT 8 SECONDS AND S 2 FT AT  
5 SECONDS. PATCHY FOG IN THE MORNING, THEN AREAS OF DENSE FOG IN  
THE AFTERNOON. SHOWERS IN THE MORNING, THEN A CHANCE OF SHOWERS  
AND TSTMS IN THE AFTERNOON. VSBY 1 NM OR LESS.    
MON NIGHT  
S WINDS 30 TO 40 KT WITH GUSTS UP TO 50 KT. SEAS  
10 TO 14 FT, BUILDING TO 12 TO 16 FT AFTER MIDNIGHT. WAVE DETAIL:  
S 14 FT AT 10 SECONDS AND S 2 FT AT 5 SECONDS, BECOMING S 16 FT  
AT 10 SECONDS AND S 2 FT AT 5 SECONDS. AREAS OF DENSE FOG.  
SHOWERS. VSBY 1 NM OR LESS.    
TUE  
W WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 9 TO  
13 FT, SUBSIDING TO 7 TO 10 FT IN THE AFTERNOON. WAVE DETAIL: S  
13 FT AT 11 SECONDS AND W 3 FT AT 6 SECONDS, BECOMING S 10 FT AT  
11 SECONDS AND W 3 FT AT 5 SECONDS. PATCHY FOG IN THE MORNING.  
SHOWERS LIKELY IN THE MORNING.    
TUE NIGHT  
W WINDS 25 TO 30 KT, BECOMING NW 20 TO 25 KT AFTER  
MIDNIGHT. SEAS 7 TO 10 FT, SUBSIDING TO 5 TO 8 FT AFTER MIDNIGHT.  
WAVE DETAIL: S 10 FT AT 10 SECONDS AND W 4 FT AT 5 SECONDS,  
BECOMING S 8 FT AT 10 SECONDS AND W 4 FT AT 5 SECONDS.    
WED  
NW WINDS 15 TO 20 KT, BECOMING SW 5 TO 10 KT IN THE  
AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: S 6 FT AT 10 SECONDS AND  
W 2 FT AT 5 SECONDS.    
WED NIGHT  
S WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.    
THU THROUGH FRI NIGHT  
SW WINDS 15 TO 20 KT WITH GUSTS UP TO  
25 KT. SEAS 2 TO 3 FT.  
 
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 
 
 
ANZ237-161500-  
BLOCK ISLAND SOUND-  
1005 PM EDT SUN MAR 15 2026  
 
...STORM WARNING IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY  
MORNING...  
   
OVERNIGHT  
SE WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT,  
INCREASING TO 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 2 TO 3 FT,  
BUILDING TO 3 TO 5 FT. WAVE DETAIL: SE 3 FT AT 5 SECONDS AND SE  
1 FOOT AT 10 SECONDS, BECOMING S 5 FT AT 6 SECONDS AND SE 1 FOOT  
AT 10 SECONDS. PATCHY FOG. SHOWERS LIKELY WITH VSBY 1 TO 3 NM.    
MON  
S WINDS 20 TO 25 KT WITH GUSTS UP TO 40 KT. SEAS 5 TO  
8 FT, BUILDING TO 7 TO 10 FT IN THE AFTERNOON. WAVE DETAIL: S  
8 FT AT 9 SECONDS AND SE 7 FT AT 6 SECONDS, BECOMING SE 9 FT AT  
7 SECONDS. PATCHY FOG IN THE MORNING. AREAS OF DENSE FOG IN THE  
AFTERNOON. SHOWERS. A CHANCE OF TSTMS IN THE AFTERNOON. VSBY 1 NM  
OR LESS.    
MON NIGHT  
S WINDS 25 TO 35 KT WITH GUSTS UP TO 50 KT. SEAS  
9 TO 13 FT, BUILDING TO 11 TO 15 FT AFTER MIDNIGHT. WAVE DETAIL:  
S 13 FT AT 9 SECONDS AND SW 1 FOOT AT 5 SECONDS, BECOMING S 15 FT  
AT 10 SECONDS AND SW 3 FT AT 5 SECONDS. AREAS OF DENSE FOG.  
SHOWERS. VSBY 1 NM OR LESS.    
TUE  
W WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT. SEAS 9 TO  
12 FT, SUBSIDING TO 7 TO 10 FT IN THE AFTERNOON. WAVE DETAIL: S  
12 FT AT 11 SECONDS AND W 4 FT AT 6 SECONDS, BECOMING S 9 FT AT  
11 SECONDS AND W 4 FT AT 5 SECONDS. PATCHY FOG IN THE MORNING.  
SHOWERS LIKELY IN THE MORNING.    
TUE NIGHT  
W WINDS 20 TO 25 KT, BECOMING NW 15 TO 20 KT AFTER  
MIDNIGHT. GUSTS UP TO 30 KT. SEAS 6 TO 9 FT, SUBSIDING TO 5 TO  
7 FT AFTER MIDNIGHT. WAVE DETAIL: S 8 FT AT 11 SECONDS AND W 4 FT  
AT 5 SECONDS, BECOMING S 7 FT AT 11 SECONDS AND W 4 FT AT  
5 SECONDS.    
WED  
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING SW  
5 TO 10 KT IN THE AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: S 6 FT  
AT 10 SECONDS AND W 2 FT AT 4 SECONDS.    
WED NIGHT  
S WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.    
THU THROUGH FRI  
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.    
FRI NIGHT  
SW WINDS 15 TO 20 KT. SEAS 2 TO 3 FT. A CHANCE OF  
RAIN.  
 
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 
 
 
ANZ230-161500-  
BOSTON HARBOR-  
1005 PM EDT SUN MAR 15 2026  
 
...STORM WARNING IN EFFECT FROM MONDAY EVENING THROUGH LATE  
MONDAY NIGHT...  
   
OVERNIGHT  
SE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT.  
GUSTS UP TO 25 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS.    
MON  
SE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. WAVES 2 TO  
3 FT. PATCHY FOG. SHOWERS. VSBY 1 NM OR LESS, INCREASING TO 1 TO  
3 NM IN THE AFTERNOON.    
MON NIGHT  
S WINDS 25 TO 35 KT. GUSTS UP TO 45 KT, INCREASING  
TO 55 KT AFTER MIDNIGHT. WAVES AROUND 2 FT, EXCEPT 3 TO 5 FT AT  
THE OUTER HARBOR ENTRANCE. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM.    
TUE  
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. WAVES AROUND  
2 FT, EXCEPT 3 TO 5 FT AT THE OUTER HARBOR ENTRANCE. PATCHY FOG  
IN THE MORNING. SHOWERS LIKELY IN THE MORNING.    
TUE NIGHT AND WED  
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.  
WAVES AROUND 2 FT.    
WED NIGHT  
S WINDS 5 TO 10 KT. WAVES AROUND 2 FT IN THE  
EVENING, THEN 1 FOOT OR LESS.    
THU THROUGH FRI  
SW WINDS 10 TO 15 KT. WAVES AROUND 2 FT.    
FRI NIGHT  
SW WINDS 15 TO 20 KT. WAVES AROUND 2 FT. A CHANCE OF  
RAIN.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 
 
 
ANZ236-161500-  
NARRAGANSETT BAY-  
1005 PM EDT SUN MAR 15 2026  
 
...STORM WARNING IN EFFECT FROM MONDAY EVENING THROUGH LATE  
MONDAY NIGHT...  
   
OVERNIGHT  
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,  
INCREASING TO 20 TO 25 KT WITH GUSTS UP TO 30 KT. WAVES 2 TO  
4 FT. PATCHY FOG. SHOWERS LIKELY WITH VSBY 1 TO 3 NM.    
MON  
SE WINDS 25 TO 30 KT, BECOMING S 20 TO 25 KT IN THE  
AFTERNOON. WAVES 5 TO 7 FT. PATCHY FOG IN THE MORNING. AREAS OF  
DENSE FOG IN THE AFTERNOON. SHOWERS. A CHANCE OF TSTMS IN THE  
MORNING. VSBY 1 NM OR LESS.    
MON NIGHT  
S WINDS 25 TO 35 KT. GUSTS UP TO 45 KT, INCREASING  
TO 55 KT AFTER MIDNIGHT. WAVES 6 TO 9 FT. AT THE BAY ENTRANCE,  
WAVES 8 TO 11 FT, BUILDING TO 9 TO 13 FT AFTER MIDNIGHT. AREAS OF  
DENSE FOG IN THE EVENING. AREAS OF FOG AFTER MIDNIGHT. SHOWERS.  
VSBY 1 NM OR LESS.    
TUE  
W WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT. WAVES 5 TO  
7 FT. AT THE BAY ENTRANCE, WAVES 7 TO 10 FT, SUBSIDING TO 6 TO  
8 FT IN THE AFTERNOON. PATCHY FOG IN THE MORNING. SHOWERS LIKELY  
IN THE MORNING.    
TUE NIGHT  
W WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT  
AFTER MIDNIGHT. GUSTS UP TO 30 KT. WAVES 4 TO 6 FT, SUBSIDING TO  
2 TO 3 FT AFTER MIDNIGHT. AT THE BAY ENTRANCE, WAVES 4 TO 6 FT.    
WED AND WED NIGHT  
S WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT.  
WAVES 2 TO 3 FT.    
THU THROUGH FRI  
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.    
FRI NIGHT  
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES  
AROUND 2 FT. A CHANCE OF RAIN.  
 
WINDS AND WAVES HIGHER IN AND NEAR TSTMS.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 
 
 
FOR THE LATEST UPDATES...PLEASE VISIT OUR WEBPAGE AT  
WWW.WEATHER.GOV/BOSTON  
 
YOU CAN FOLLOW US ON FACEBOOK AT  
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.BOSTON.GOV  
 
YOU CAN FOLLOW US ON TWITTER AT  
@NWSBOSTON  
CLICK HERE TO GO TO PREVIOUS BULLETINS.
The Nexlab MA Page
The Nexlab RI Page
The Nexlab NH Page
The Nexlab CT Page
Main Text Page